1. Grading severity in retinitis pigmentosa using clinical assessment, visual acuity, perimetry and optical coherence tomography

    Grading severity in retinitis pigmentosa using clinical assessment, visual acuity, perimetry and optical coherence tomography

    To develop a grading system for retinitis pigmentosa (RP), providing clinicians with a simple, objective measure of disease severity. An observational case series of 14 patients with RP. Disease severity was assessed using four criteria; clinical appearance, visual acuity (best corrected LogMAR, BCVA), perimetry (mean deviation, MD) and Fourier-domain optical coherence tomography (outer retinal thickness, ORT at the fovea). Each criterion was scored on a severity scale from 0 (mild disease) to 4 (severe disease), giving an overall score out of 16. The mean BCVA was 0.37 LogMAR (range 0.02 to PL), mean MD was -25.35 dB ...

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